Injector.



E. M. BASSLBR.

INJECTOR.

APPLICATION FILED OUT. 27, 1908. 1,1 1 7,626, Patented N0v.17,1914.

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if s TED STATE EDWIN M. BASSLER, OF CHICAGO, ILLI NOIS.

INJECTOR.

Specification of Letters Patent.

Patented Nov. 17, 1914.

Application filed October 27, 1908. Serial No. 459,737.

To all whom it may concern:

Be it known that I, EDWIN M. BASSLER, a citizen of the United States,and a resident of Chicago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in Injectors, of whichthe following is a specification.

This invention relates to injectors and relates particularly toinjectors designed and adapted for creating a current of air, or othergaseous fluid, to produce both a suction and a blast, thereby tending tocreate a vacuum at one point and compression of said gaseous fluid atanother point.

The primary object of the invention is to provide an injector of thistype constructed and arranged to utilize a liquid under pressure,particularly water from the mains of a waterworks system, for thusproducing a current of air, preferably by connecting said injectordirectly to a faucet such as is ordinarily used for drawing water fromwater mains for domestic use.

To this end an injector of my invention consists of the variousfeatures, combinations of features and details of constructionhereinafter described and claimed.

In the accompanying drawing, in which my invention is fullyillustratedFigure 1 is a central, vertical sectional view of my improvedinjector, shown as embodied in a vacuum cleaning system, the dust ordirt receptacle and the pipe connections of which are shown in sideelevation; and Fig. 2 is a top plan view of my improved injector, theparts thereof above the upper partition being removed.

For purposes of concrete illustration, I have, in the accompanyingdrawing, shown my improved injector as applied for use in a vacuumcleaning system. It is, however, adapted for a wide range of applicationand I, therefore, desire to have it clearly understood that the specificapplication shown is in no way intended as a limitation.

Referring now to the drawing. 1 designates the shell of my improvedinjector, the sides and ends of which are closed, except for pipeconnections as presently explained, and the interior of which is dividedinto upper, middle and lower compartments 2, 3 and 4, respectively, bysuitable transverse partitions 5 and 6.

For convenience in assembling and to render the interior of the injectorrea dilv accessible for purposes of repairs and cleaning,

the shell 1 is made in separate sections 7, 8 and 9, which arecoextensive, respectively, with the compartments 2, 3 and 4, saidsections being secured together to form a unitary structure, by bolts,or the like, inserted through flanges formed on the adjacent ends ofsaid sections. As shown, also, the edges of the partitions 5 and 6extend between the connected flanges on the sections of said shell andare secured in position by the bolts which connect said flanges.

Secured in the upper partition 5 are a plurality of jet-nozzles 10, theupper ends of which are in open communication with the upper compartment2 of the injector and the lower discharge ends of which extend into theopen ends of induction tubes 11 secured in the lower partition 6 andwhich extend downwardly into the lower compartment 4t of the injector,the relation being such that a space will be formed between the lowerends of the jet-nozzles l0 and the inner sides of the induction tubes 11sufficient to permit the free passage of air or other gaseous fluid.

To provide for air and other gaseous fluid entering the induction tube11 freely under the influence of a jet of water or other liquiddischarged into the same from the jet-nozzles 10, the upper ends of saidinduction tube are flared, as shown at 12, said induction tubes beingcontracted just below the discharge ends of the jet-nozzles 10, as shownat 13, so that the jets from said jet-nozzles will entirely fill thecross section thereof, thus insuring the highest efficiency of saidinjector. Preferably, also the lower ends of said induction tube areflared downwardly, as shown at 14, thus permitting expansion of the airor other gaseous fluid passing through the same and reducing thefriction thereof, whereby all choking is prevented in said inductiontubes. Also, in order to reduce friction in the jet-nozzles 10. whichwould tend to reduce the velocity of the. jets therefrom, saidjet-nozzles are made larger at their upper ends than at their lowerends.

The jet-nozzles 10 and the induction tubes 11 may be made of anysuitable material, being, however, preferably made of annealed glass.Said jet-nozzles 10 and the induction tubes 11 may be secured in thepartitions 5 and 6, respectively, in any desired manner, beingpreferably cemented therein in accordance with any approved practice.

As regards the multiplicity of jet nozzles 10 and the induction tubes11, the principle of my improved injector is that the efiiciency of theinjector depends upon the aggregate surface areas of the jets and, asthe surface areas of a multiplicity of small jets will aggregate muchmore than the surface area of a single jet proportioned for thedischarge of the same volume of water, it is obvious that the more thejets are broken up, the greater will be the efiiciency of the injector.I have discovered, also, that to produce a current of air sufficient forany practical purpose, it is necessary to provide a seal for the lowerends of the induction tubes 11. As shown, said induction tubes are thussealed by means ofthe water discharged from the jet-nozzles 10, which ispermitted to accumulate in a pan 15 supported below said inductiontubes, the top of which extends slightly above the lower ends of saidtubes. Thus, when the water rises in said pan 15 so as to overflow thesame, the lower ends of said induction tubes will dip slightly into thesame and willbe effectually sealed thereby. The surplus water willmerely overflow said pan and run to waste in the manner presentlydescribed.

In the preferable construction shown, the

pan 15 is supported upon standards 16, the

lower ends of which are permanently secured to the removable lower head17 of the shell 1 of the injector, thus providing for convenientlyremoving said pan, together with adjunctive parts, with the head 17, forpurposes of repairs and cleaning, and the like. This construction alsoprovides for conveniently assembling said parts before introducing thesame into the apparatus. The bottom of the pan 1.5 preferably declinestoward a drain opening 18 in the center thereof.

The pipe connections of my improved injector comprise openings 19, 20,21 and 22 formed in the shell of the casing and which communicate,respectively, the opening 19 with the upper compartment 2, the opening20 with the middle compartment 3, and the openings 21 and 22 with thelower compartment 4. The opening 19 is adapted to be connected to asuitable source of supply of liquid under pressure, as with a waterfaucet, not shown; the opening 20 is the admission openin through whichair or other gaseous fluidis admitted to the injector; the opening 21 isthe discharge opening through which the current of air or other gaseousfluid is discharged from the injector; and the opening 22 is a waterdischarge opening through which the water which overflows the pan 15 mayescape from the injector. To facilitate making pipe and faucetconnections thereto, all of said openings are preferably screw threaded.

To prevent objects which may enter the compartment 2 through the liquidsupply thus providing for creating an air pressure.

in the lower compartment 4 of the injector,

I provide a water seal adapted for closing said opening.

As shown, said water seal consists of cylinders 24 and 25 having closedsides, the cylinder 24 being secured directly to the bottom of the pan15and extending downwardly around the water discharge opening 22 to withina short distance of the lower head 17 of the injector, and the cylinder25 being secured directly to the lower head 17 of the injectorsurrounding the water discharge opening 22 and extending upwardly withinthe cylinder 24 to within a short distance of the bottom of the pan 15.With this construction, it is obvious that, as the water overflows thepan 15, it will accu mulate in the bottom of the shell 1 until itoverflows the top of the inner cylinder 25. With this construction it isobvious that a water column will be formed in the space between thecvlinders 24 and 25 equal'in height to the distance which the ends ofthe cylinders 24 and 25 overlap, thus providing for the generation inthe lower chamber'4 of the injector of an air pressure corresponding tothe height of the water column thus formed. The water seal justdescribed is very desirable also where said injector is used forventilating purposes to prevent sewer gas and the like entering theinjector through the water discharge opening 22.

When intended for use for ventilating purposes, it is also desirable toprovide a seal for the vent opening 18 in the bottom of the pan 15. Thiscan be effected in a simple manner by securing a short pipe in the drainopening 18 and securing a cup 26 over the end of the same so that thetop of the cup will extend above the lower end of said pipe,

in a familiar manner. The drain opening 18 is very small as comparedwith theaggregate size of the jet-nozzles, so as not to interfere withthe formation of water seals as described.

To prevent the accumulation of dust and dirt on the exterior surfaces ofthejet-noz- ,zles 10 in the operation of the machine,

means are provided for washing said jetno-zzles. As shown, said meansconsist of jet-nozzles 27 communicating with the upper compartment 2 ofthe injector and which discharge directly into the compartment 3,adjacent to its upper end. The current of air in said chamber 3 beinginwardly through said jet-nozzles 10, will operate to draw the waterjets inwardly into contact with the outer surfaces of said jet-nozzles,thus washing the same and keeping the same clean at all times.

In the specific application of my injector shown in the drawings, theair supply open- I ing of the injector is connected by a pipe 28directly with the separating tank or chamber, indicated as a who-1e byA, of a vacuum cleaning system, said separating tank or chamber A beingprovided with an admission pipe 29, to which a hose, not shown, isadapted to be connected, a suitable suction nozzle of any approved type,likewise not shown, being connected to the outer end of said hose. Saidseparating tank or chamber A may be of any desired or approvedconstruction, but as the specific construction or form thereof isimmaterial so far as the present invention is concerned, theconstruction thereof is not shown in detail.

I claim 1. In an injector, the combination of a shell, upper and lowerpartitions therein which divide the interior of said shell into upper,middle and lower compartments, the upper of said compartments beingprovided with an opening adapted for connectlon with a source of supplyof liquid under pressure, the middle compartment with an air admissionopening and the lower compartment with an air discharge opening and witha water discharge opening, jet-nozzles which extend through the upperpartition, the upper ends of which are in open communication with theupper compartment of the injector, induction tubes which extend throughthe lower partition, the upper ends of which are in open communicationwith the middle chamber of the injector, the relation being such thateach of said nozzles will discharge into the upper end of an inductiontube, means for sealing the lower ends of said induction tubes and gasesfrom entering the lower ends thereof, and means for sealing the waterdischarge opening from the injector, said means comprising cylindershaving closed sides, the upper end of one of said cylinders being closedand the lower end thereof terminating short of the bottom of theinjector and the other of said cylinders being secured directly to thebot tom of the injector shell and extending upwardly within the other,so that the adjacent ends of said cylinders will overlap.

2. In an injector, the combination of a shell, upper and lowerpartitions therein which divide the interior of said shell into upper,middle and lower compartments, the upper of said compartments beingprovided with an opening adapted for connection with a source of supplyof liquid under pressure, the middle compartment with an air admissionopening and the lower compartment with an air discharge opening and witha water discharge opening, jet-nozzles which extend through the upperpartition, the upper ends of which are in open communication with theupper compartment of the injector, induction tubes which extend throughthe lower partition, the upper ends of which are in open communicationwith the middle chamber of the injector, the relation being such thateach of said nozzles will discharge into the upper end of an inductiontube, means for sealing the lower ends of said induction tubes, saidmeans consisting of a pan supported beneath said induction tubes the topof which extends above the lower ends of said induction tubes,

whereby when water overflows said pan the level thereof will be abovethe lower ends of said tubes, and a seal for the water discharge openingfrom the injector, said seal comprising cylinders having closed sides,one attached directly to the bottom of the pan forming the seal for theinduction tubes and extending downwardly therefrom and the otherattached directly to the'bottom of the injector shell and extendingupwardly within the cylinder attached to said pan, so that the adjacentends of said cylinders will overlap.

3. In an injector, the combination of a shell, upper and lowerpartitions therein which divide the interior of said shell into upper,middle and lower compartments, the upper of said compartments beingprovided with an opening adapted for connection with a source of supplyof liquid under pressure, the middle compartment with an air admissionopening and the lower compartment with an air discharge opening and witha water discharge opening, jet-nozzles which extend through the upperpartition, the upper ends of which are in open communication with theupper compartment of the injector, induction tubes which extend throughthe lower partition, the upper ends of which are in open communicationwith the middle chamber of the injector, the relation being such thateach of said nozzles will discharge into the upper end of an inductiontube, means for sealing the lower ends of said induction tubes, saidmeans consisting of a pan supported beneath said induction tubes at aconsiderable distance above the bottom of the injector shell, the top ofwhich extends above the lower ends of said induction tubes, whereby whenwater overflows said pan, the level thereof will be above the lower endsof said tubes and a water seal for the water discharge opening from theinjector, said seal comprising cylinders having closed sides, oneattached directly to the bottom of the pan forming the seal of theinduction tubes and extending downwardly therefrom and the otherattached directly to the bottom of the injector shell and extendingupwardly within the cylinder attached to said pan, the adj acent' endsof said cylinders overlapping whereby a water column, corresponding to adesired pressure in the lower compartment of the injector will be formedin the space between said cylinders in the operation of the injector.

4. In an injector, the combination of a shell, upper and lowerpartitions therein which divide the interior of said shell into upper,middle and lower compartments, the upper of said compartments beingprovided with an opening adapted for connection with a source of supplyof liquid under pressure, the middle compartment with an air admissionopening and the lower compartment with an air discharge opening and witha water discharge opening, jet-nozzles which extend through the upperpartition, the upper ends of which are in open communication with theupper compartment of the injector, induction tubes which extend throughthe lower partition, the upper ends of which are in open communicationwith the middle chamber of the injector, the relationbeing such thateach of said nozzles will discharge into the upper end of an inductiontube, means for sealing the lower ends of said induction tubes, saidmeans consisting of a pan supported beneath said induction tubes, thetop of which extends above the lower ends of said induction tubeswhereby, when water overflows said pan the level thereof will be abovethe lower ends of said tubes, said pan being provided with a drainopening in its bottom, and means for sealing said drain opening and thewater discharge opening from the injector.

5. In an injector, the combination of a shell, upper and lowerpartitions therein which divide the interior of said shell into upper,middle and lower compartments, the upper of said compartments beingprovided with an opening adapted for connection with a source of supplyof liquid under pressure, the middle compartment with an air admissionopening and the lower compartment with an air and water dischargeopening, jet-nozzles which extend through the.

upper partition, the upper ends of which are in open communication withthe upper compartment of the injector, induction tubes which extendthrough the lower partition, the upper ends of which are in opencommunication with the middle chamber of the injector, the relationbeing such that each of said nozzles will discharge into the upper endof an induction tube, and jet nozzles which extend through the upperpartition of the injector adapted to discharge jets of water directlyinto the upper end of the middle compartment of the injector to wash theexterior surfaces of the jet-nozzles.

In testimony, that I claim the foregoing as my invention, I aflix mysignature in presence of two subscribing witnesses, this 24th day ofOctober, A. D. 1908.

ED WIN M. BASSLER.

Witnesses:

G. M. ELLINGEN, K. A. Cos'rELLo.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

